A London taxicab driver cashes in on a big sweepstakes ticket and becomes the prey of a confidence-gang that sells him a nag of a cavalry horse on the claim that it is a brother to a current Derby winner.

Storyline

A London taxicab driver cashes in on a big sweepstakes ticket and becomes the prey of a confidence-gang that sells him a nag of a cavalry horse on the claim that it is a brother to a current Derby winner.